Damper and damper

Abstract

The utility model relates to the technical field of shock absorbers, and provides a buffering piece and a shock absorber. The buffering piece comprises a supporting framework which comprises an annular body and a first shoulder formed on the first end face of the annular body, and the first shoulder extends inwards relative to the annular body; the flexible buffer is arranged on the first end face of the annular body and wraps the first shoulder; wherein the supporting framework is used for being assembled with a guider of the shock absorber, the flexible buffer is used for being matched with the recovery part, and the recovery part is assembled on a connecting rod of the shock absorber. The buffering piece comprises a supporting framework for improving impact resistance and a flexible buffering piece for reducing impact noise. In the stretching process of the shock absorber, the restoring piece assembled on the connecting rod collides and makes contact with the flexible buffer, noise and impact are absorbed through the flexible buffer, the structural strength is ensured through the supporting framework, the restoring piece is prevented from directly colliding and making contact with the guider, abnormal sound is effectively reduced, and the working performance of the shock absorber is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shock absorbers, in particular to a buffer component and a shock absorber. Background Art

[0002] Shock absorbers are installed in the chassis system of the vehicle to reduce vibration and improve the stability and comfort of the vehicle.

[0003] When the vehicle is driving, when the tire jumps down, the shock absorber is in a stretched state. At this time, the restoring spring installed on the connecting rod of the shock absorber will contact and collide with the guide installed on the top of the cylinder of the shock absorber, causing abnormal noise.

[0004] At present, the main way to improve the problem of abnormal noise caused by the return spring hitting the guide in the industry is to replace the return spring with a return buffer block made of softer material (such as rubber) to reduce the noise caused by the impact. However, the return buffer block made of softer material has poor impact resistance. Road test and durability tests have found that the return buffer block made of softer material is very easy to break with use, affecting the working performance of the shock absorber.

[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the utility model, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0006] In view of this, the utility model provides a buffer component and a shock absorber equipped with the buffer component, the buffer component is used to be assembled with a guide, and includes a supporting frame for improving impact resistance and a flexible buffer for reducing impact noise; during the stretching process of the shock absorber, a restoration component assembled on a connecting rod collides with and contacts the flexible buffer, and noise and impact are absorbed by the flexible buffer, and the structural strength is ensured by the supporting frame, so that the restoration component is prevented from directly colliding with the guide, thereby effectively reducing abnormal noise and improving the working performance of the shock absorber.

[0007] One aspect of the utility model provides a buffer component for a shock absorber, the buffer component comprising: a support skeleton, comprising an annular body and a first shoulder formed on a first end face of the annular body, the first shoulder extending inward relative to the annular body; a flexible buffer, arranged on the first end face of the annular body and covering the first shoulder; wherein the support skeleton is used to be assembled with a guide of the shock absorber, the flexible buffer is used to cooperate with a restoration component, and the restoration component is assembled on a connecting rod of the shock absorber.

[0008] In some embodiments, the flexible buffer interference covers the first shoulder.

[0009] In some embodiments, the buffer component further includes: a spring, the first shoulder is provided with a receiving groove, the spring is embedded in the receiving groove and contacts the flexible buffer.

[0010] In some embodiments, the receiving groove is disposed on any end surface of the first shoulder, or the receiving groove passes through the first shoulder.

[0011] In some embodiments, the receiving groove is completely or partially aligned with the impact portion of the restoration member.

[0012] In some embodiments, the flexible buffer includes a first portion and a second portion respectively located at both end surfaces of the first shoulder, and the thickness of the first portion, the thickness of the second portion, and the thickness of the first shoulder are all between 3 mm and 5 mm.

[0013] In some embodiments, the thickness of the first portion is greater than the thickness of the second portion; wherein the first portion faces the restoration element.

[0014] In some embodiments, the support frame further includes a second shoulder formed on a second end surface of the annular body, and the second shoulder extends outwardly relative to the annular body.

[0015] In some embodiments, the support frame is made of plastic and / or metal, and / or the flexible buffer is made of rubber.

[0016] Another aspect of the utility model provides a shock absorber, comprising: an inner cylinder and an outer cylinder that are coaxial and have a gap set; a guide installed at the ends of the inner cylinder and the outer cylinder; a connecting rod passing through the guide and extending into the inner cylinder; a buffer as described in any of the above embodiments, the buffer being pressed between the guide and the inner wall of the inner cylinder through an annular body, the flexible buffer gap of the buffer contacting the connecting rod, and the flexible buffer interference contacting the end face of the guide and the inner cylinder; wherein a restoring member is assembled on the connecting rod, and as the connecting rod stretches, the restoring member hits the flexible buffer.

[0017] Compared with the prior art, the beneficial effects of the present invention include at least:

[0018] The buffer component of the utility model comprises a supporting frame for improving the impact resistance and a flexible buffer for reducing the impact noise. The supporting frame is used to realize the stable assembly with the guide device, and the flexible buffer is used to realize the impact coordination with the restoration component assembled on the connecting rod. During the stretching process of the shock absorber, the restoration component assembled on the connecting rod collides with the flexible buffer, and the flexible buffer absorbs the noise and impact. The supporting frame ensures the structural strength, and the restoration component is prevented from directly colliding with the guide device, thereby effectively reducing abnormal noise and improving the working performance of the shock absorber.

[0019] It should be understood that the above general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present invention, and together with the specification, are used to explain the principles of the present invention. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 A schematic cross-sectional view of a buffer member in an embodiment of the utility model is shown;

[0022] Figure 2 A cross-sectional structural schematic diagram of another buffer member in an embodiment of the utility model is shown;

[0023] Figure 3 A cross-sectional structural schematic diagram showing a buffer component assembled in a shock absorber in an embodiment of the utility model is shown. DETAILED DESCRIPTION

[0024] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein. Instead, these embodiments are provided to make the present invention more comprehensive and complete and to fully convey the concepts of the example embodiments to those skilled in the art.

[0025] The accompanying drawings are only schematic illustrations of the present invention and are not necessarily drawn to scale. The same reference numerals in the drawings represent the same or similar structures, and thus their repeated description will be omitted.

[0026] The words "first", "second" and similar words used in the specific description do not indicate any order, quantity or importance, but are only used to distinguish different components. The orientation or positional relationship indicated by the terms "upper", "lower", "top", "bottom" and the like are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of description and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they cannot be understood as limitations on the present utility model. The term "plurality" means two or more, unless otherwise clearly and specifically defined. In addition, in the description of the present utility model, when it is said that a device is "connected" to another device, this includes not only direct connections, but also indirect connections through other elements.

[0027] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in different embodiments may be combined with each other.

[0028] Figure 1 The cross-sectional structure of the buffer is shown schematically. Figure 3 The cross-sectional structure of the buffer assembly in the shock absorber is shown; Figure 1 and Figure 3 As shown, the buffer member 100 for the shock absorber 200 provided in the embodiment of the utility model comprises:

[0029] The support frame 110 includes an annular body 111 and a first shoulder 112 formed on a first end surface of the annular body 111, wherein the first shoulder 112 extends inwardly relative to the annular body 111;

[0030] The flexible buffer 120 is disposed on the first end surface of the annular body 111 and covers the first shoulder 112;

[0031] The support frame 110 is used to be assembled with the guide 210 of the shock absorber 200 , and the flexible buffer 120 is used to cooperate with the restoration member 230 , and the restoration member 230 is assembled on the connecting rod 220 of the shock absorber 200 .

[0032] The buffer 100 of the utility model includes a support frame 110 for improving impact resistance and a flexible buffer 120 for reducing impact noise. The support frame 110 is used to achieve a stable assembly with the guide 210, and the flexible buffer 120 is used to achieve impact coordination with the restoration member 230 assembled on the connecting rod 220. During the stretching process of the shock absorber 200, the restoration member 230 assembled on the connecting rod 220 impacts and contacts the flexible buffer 120, and the flexible buffer 120 absorbs noise and impact, and the support frame 110 ensures the structural strength, so as to prevent the restoration member 230 from directly impacting and contacting the guide 210 (the guide 210 is usually a powder metallurgy part), which can effectively reduce the abnormal impact sound, and can also buffer and protect the restoration member 230 and the guide 210, thereby improving the working performance of the shock absorber 200.

[0033] It should be noted that the cooperation between the flexible buffer 120 and the restoring member 230 refers to that during the stretching process of the shock absorber 200, the restoring member 230 collides with and contacts the flexible buffer 120, and the flexible buffer 120 deforms to absorb noise and impact; it does not mean that the flexible buffer 120 and the restoring member 230 are assembled / connected.

[0034] Among them, the annular body 111 of the support frame 110 can be press-fitted between the inner wall of the inner cylinder 240 of the shock absorber 200 and the guide 210, or the inner cylinder 240, the annular body 111 and the guide 210 can be firmly assembled by fasteners such as screws. The flexible buffer 120 covers the first shoulder 112, and can be respectively press-fitted with the end faces of the inner cylinder 240 and the guide 210, and have a clearance fit with the connecting rod 220. The restoring member 230 assembled on the connecting rod 220 can be a soft restoring buffer block, a hard restoring buffer block, a restoring spring, etc., which can reduce the impact noise and increase the service life by cooperating with the flexible buffer 120.

[0035] In some embodiments, the flexible buffer 120 covers the first shoulder 112 with interference fit, thereby ensuring a stable assembly of the flexible buffer 120 and the supporting frame 110 and preventing the flexible buffer 120 from falling off due to impact deformation.

[0036] In order to enhance the fit stability between the flexible buffer 120 and the support frame 110, some fitting structures may be provided between the flexible buffer 120 and the first shoulder 112; for example, some grooves may be provided on the surface of the first shoulder 112, and some ribs may be provided on the surface of the flexible buffer 120, and the fit strength between the flexible buffer 120 and the support frame 110 may be enhanced by embedding the ribs in the grooves; for another example, some anti-slip bumps may be provided on the surface of the first shoulder 112, and the fit strength between the flexible buffer 120 and the support frame 110 may be enhanced by the anti-slip effect of the anti-slip bumps.

[0037] In some embodiments, the flexible buffer 120 includes a first portion 120a and a second portion 120b respectively located at both end surfaces of the first shoulder 112, and the thickness of the first portion 120a, the thickness of the second portion 120b, and the thickness of the first shoulder 112 are all between 3 mm and 5 mm.

[0038] The thickness design of the first part 120a and the second part 120b of the flexible buffer 120 ensures that the flexible buffer 120 plays an effective role in vibration reduction and buffering. The thickness of the first part 120a / the second part 120b of the flexible buffer 120 can be 3mm, 4mm, 5mm, etc., but is not limited thereto. In some cases, according to the vibration reduction and buffering requirements, the thickness of the first part 120a / the second part 120b of the flexible buffer 120 can be designed to other suitable values, not limited to the above-mentioned 3mm to 5mm.

[0039] The thickness of the first shoulder 112 is designed to ensure that the first shoulder 112 plays a role in supporting the structural strength. The thickness of the first shoulder 112 can be 3 mm, 4 mm, 5 mm, etc., but is not limited thereto. In some cases, according to the structural strength requirements, the thickness of the first shoulder 112 can be designed to be other suitable values, not limited to the above-mentioned 3 mm to 5 mm.

[0040] In some embodiments, the thickness of the first portion 120a is greater than the thickness of the second portion 120b, wherein the first portion 120a faces the restoration member 230. By forming a thicker design of the first portion 120a facing the restoration member 230, it is helpful to achieve that when the restoration member 230 hits the first portion 120a, the first portion 120a effectively absorbs noise and impact.

[0041] In a specific embodiment, the thickness of the first portion 120a of the flexible buffer 120 is set to 4 mm, the thickness of the first shoulder 112 is set to 3 mm, and the thickness of the second portion 120b of the flexible buffer 120 is set to 3 mm, but the present invention is not limited thereto.

[0042] In some embodiments, the support frame 110 further includes a second shoulder 113 formed on a second end surface of the annular body 111 , and the second shoulder 113 extends outward relative to the annular body 111 .

[0043] The second shoulder 113 can be press-fitted between the end surface of the inner cylinder 240 and the guide 210 to ensure that the buffer 100 and the shock absorber 200 are firmly assembled. When the buffer 100 and the shock absorber 200 are assembled, the flexible buffer 120 and the support frame 110 can be assembled first, and then the support frame 110 and the guide 210 can be interference-fitted, and finally the guide 210 and the buffer 100 can be inserted into the inner cylinder 240.

[0044] In some embodiments, the support frame 110 is made of plastic and / or metal, and / or the flexible buffer 120 is made of rubber.

[0045] The support frame 110 made of plastic, metal and other materials can ensure the structural strength and improve the overall impact resistance of the buffer 100; the flexible buffer 120 made of rubber has strong buffering and deformation capabilities, and can effectively reduce and absorb the noise and impact caused by the impact of the recovery part 230.

[0046] Figure 2 A cross-sectional structure of another buffer member is shown; Figures 1 to 3 As shown, in some embodiments, the buffer 100 further includes: a spring 130 ; the first shoulder 112 is provided with a receiving groove 116 ; the spring 130 is embedded in the receiving groove 116 and contacts the flexible buffer 120 .

[0047] With the aid of the spring 130 , the collision impact from the restoration member 230 is transmitted between the flexible buffer 120 and the support frame 110 through the spring 130 , thereby further weakening and absorbing the noise and impact caused by the collision of the restoration member 230 .

[0048] In some embodiments, the receiving groove 116 is disposed on any end surface of the first shoulder 112, or the receiving groove 116 passes through the first shoulder 112. According to factors such as the thickness of the first shoulder 112 and the requirements for absorbing impact noise and shock, the receiving groove 116 can be formed as a countersunk hole located on the upper end surface / lower end surface of the first shoulder 112 or a through hole passing through the first shoulder 112, both of which can effectively reduce and absorb the noise and shock caused by the impact of the restoring member 230 through the spring 130 embedded in the receiving groove 116.

[0049] In some embodiments, the receiving groove 116 completely or partially aligns with the impact portion 233 of the restoring member 230 . In this way, it is ensured that the collision impact from the restoring member 230 is transmitted between the flexible buffer 120 and the supporting frame 110 through the spring 130 .

[0050] The embodiment of the utility model also provides a shock absorber 200 configured with the above-mentioned buffer member 100. Figures 1 to 3 As shown, the shock absorber 200 comprises:

[0051] An inner cylinder 240 and an outer cylinder 250 are coaxial and spaced apart;

[0052] A guide 210 is installed at the ends of the inner cylinder 240 and the outer cylinder 250;

[0053] The connecting rod 220 passes through the guide 210 and extends into the inner cylinder 240;

[0054] The buffer member 100 is press-fitted between the guide 210 and the inner wall of the inner cylinder 240 through the annular body 111, and the flexible buffer 120 of the buffer member 100 is in interference contact with the end surface of the guide 210, the connecting rod 220 and the inner cylinder 240;

[0055] The connecting rod 220 is equipped with a restoring member 230 , and as the connecting rod 220 is stretched, the restoring member 230 hits the flexible buffer 120 .

[0056] The buffer 100 is stably assembled with the guide 210 through the support frame 110 and improves the overall impact resistance. The flexible buffer 120 is used to collide with the recovery member 230 mounted on the connecting rod 220 to absorb the impact noise and impact. Specifically, during the stretching process of the shock absorber 200, the recovery member 230 mounted on the connecting rod 220 impacts and contacts the flexible buffer 120, and the flexible buffer 120 absorbs the noise and impact. The structural strength is ensured by the support frame 110 to prevent the recovery member 230 from directly impacting and contacting the guide 210, which effectively reduces the impact noise and can buffer and protect the recovery member 230 and the guide 210, thereby improving the working performance of the shock absorber 200.

[0057] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A buffer, characterized in that: For a shock absorber, the buffer member comprises: A support frame, comprising an annular body and a first shoulder formed on a first end surface of the annular body, wherein the first shoulder extends inwardly relative to the annular body; A flexible buffer, disposed on the first end surface of the annular body and covering the first shoulder; Wherein, the support frame is used to be assembled with the guide of the shock absorber, the flexible buffer is used to cooperate with the restoration member, and the restoration member is assembled on the connecting rod of the shock absorber.

2. The buffer member according to claim 1, characterized in that: The flexible buffer interference covers the first shoulder.

3. The buffer member according to claim 1, characterized in that: Also includes: The first shoulder is provided with a receiving groove, the spring is embedded in the receiving groove and contacts the flexible buffer.

4. The buffer member according to claim 3, characterized in that: The receiving groove is arranged on any end surface of the first shoulder, or the receiving groove passes through the first shoulder.

5. The buffer member according to claim 3, characterized in that: The receiving groove is completely or partially aligned with the impact portion of the restoring member.

6. The buffer member according to claim 1, wherein: The flexible buffer comprises a first part and a second part respectively located at both end surfaces of the first shoulder, and the thickness of the first part, the thickness of the second part, and the thickness of the first shoulder are all between 3 mm and 5 mm.

7. The buffer member according to claim 6, characterized in that: The thickness of the first portion is greater than the thickness of the second portion; Wherein, the first part faces the restoration part.

8. The buffer member according to claim 1, wherein: The support frame further includes a second shoulder formed on a second end surface of the annular body, wherein the second shoulder extends outwardly relative to the annular body.

9. The buffer member according to any one of claims 1 to 8, characterized in that: The supporting frame is made of plastic and / or metal, and / or the flexible buffer is made of rubber.

10. A shock absorber, characterized in that: include: An inner cylinder and an outer cylinder which are coaxial and spaced apart; A guide installed at the ends of the inner cylinder and the outer cylinder; A connecting rod, passing through the guide and extending into the inner cylinder; The buffer member according to any one of claims 1 to 9, wherein the buffer member is press-fitted between the guide and the inner wall of the inner cylinder through an annular body, a flexible buffer gap of the buffer member contacts the connecting rod, and the flexible buffer interference contacts the end surface of the guide and the inner cylinder; Wherein, a restoring member is mounted on the connecting rod, and as the connecting rod stretches, the restoring member hits the flexible buffer.

Images